Stuccoing and plastering machine



March 24, 1931. E. MORELLI STUCCOING AND PLASTERING MACHINE Filed Nov.25, 1928 2 Sheets-Sheet 1 INVENTOR tow/cc IVoxe-Au.

-29 4 7 A TTORNE P March 24, 1931. E. MORELLI 1,797,437

STUCCO ING AND PLASTERING MACHINE Filed Nov. 25, 1928 2 Sheets-Sheet 2 HHI H H 4 I INVENTOR.

Eng/ca fifO/QELI- ATTORNEY.

Patented Mar. 24, 1931 UNITED STATES ENRICO MORELLI, F CINCINNATI, OHIOSTUCCOING AND PLASTERING MACHINE Application filed November 23, 1928.Serial No. 321,378.

My invention relates particularly to ma chines for applying plaster orstucco or the like material to buildings, such as is described in myapplication Serial No. 306,487.

The objects of the invention are to provide a simple, efficient, anddurable device for utilization in economically and efiectively applyingplaster, stucco, and the like plastic material to the surface of thecorners of rooms; and to provide means whereby the material beingapplied is automatically c onveyed from a supply hopper, spread uponsaid surface and smoothed thereon.

The invention consists in the combination of the parts, in the detail ofthe construction, and in the arrangement of the elements, as claimed.

In the drawings:

Fig. 1 is a side elevationof the invention with the parts broken awayand showing parts in dotted lines;

Fig. 2 is a section takenon a line corresponding to 22 in Fig. 3, withpartsbroken away;

2 Fig. 3 is a transverse section taken on a line corresponding to 33 inFig 2; and

Fig. 4 is a section taken on a line corresponding to 44 in Fig. 3.

In the preferred construction of the invention, I provide the plasteringmachine 1 having the frame 2 comprising the spaced apart rectangularvertical supports 3, the top'plate 4. A base not shown, is suitablyconnected with the lower ends of the supports 3.

Slidably mounted on the supports 3 is the carriage 5. The frame 6 of thecarriage comprises the spaced apart sides 7 and 8 each having the spacedapart rectangular holes 9 and 10 therein slidably receiving the supports3. The sides 7 and 8 are maintained in fixed relation with respect toeach other as by-the spaced apart and parallel horizontal struts 11, 12,and 13. extending intermediate the sides 7 and 8 and integral therewith.Intermediate the holes 9 in the side 7 of the frame 6 is the integralhub 14 slidably receivingthe vertical screw 15 having its lower endiournaled in a suitable bearing in the base. The upper end of the screw15 is journaled in a bearing in the top plate 4. Intermediate the holes10 in the side 8 of the frame 6 is the integral internal threaded hub 16threaded to the vertical screw 17 having its lower end journaled in asuitable bearing in the base. The upper end 18 of the screw 17 isjournaled in a bearing in the top plate 4, whereby rotation of the screw17 is adapted to impart vertical. movement to the carriage 5.

The screws 15 and 17 are rotated by suitable outside source of powersupply, which may be an electric motor-mounted upon the base. 7 I

Secured to the arms 19, which extend in wardly from the sides 7 and 8 ofthe carriage 5, is the plaster or other'p'lastic material hopper 20having the orifice 21 in its bottom 22 for the purpose of permittingplaster to be discharged from the hopper onto the plurality of plasterconveying belts 23 which are mounted adjoining each other in the circumvferential grooves 24-and 25, respectively, in the front and rear rollers26 and 27.

The belts 23 are adapted to automatically convey the dried plaster,accumulating when the machine stands idle after use, from the machinewhen the latter isoperated whereby the conveying mechanism does notrequire frequent replacements and will not require manual cleansing.

The front roller 26 is mounted upon the 89 shaft 28 having its ends 29rotatably mounted in hearings in the sides of the carriage frame. Therear roller 27 ismounted upon the shaft 30 having its ends 31 rotatablymounted in hearings in the arms of the carriage frame. 89 The rearroller 27 has the centrally disposed circumferential groove 33 thereinin which is mounted the sprocket 34; suitably fixed to the roller shaft30.

Keyed to the screv 15 is the beveled gear 35 so meshing with the bevelgear 36 fixed to the end of the horizontal shaft 37 rotatably mounted inbearings in the webs 38 integral with the struts 11 and 12. To the end39 of the shaft 37 is fixed the sprocket 40 having meshed therewith thebelt chain 41 which is meshed with the sprocket 34, whereby rotation ofthe output shaft of the source of power supply is adapted to impartrotatable w movement to the screw 15 Which in turn imparts rotatablemovement to the rear roller 27, through the mechanism just previouslyexplained.

It is understood that the rear roller 27 is adapted to rotate in thedirection indicated by the arrow 42 when the plaster is being conveyedfrom the hopper toward the front roller during ascent of the carriage 5which is' positioned with the front roller 26 and adjacent and parallelto the wall 48 being plastered.

For the purpose of scraping the conveyed plaster from the belts 23,adjacent the wall 43, the scraper 44 is pivotally mounted on the bosses45 of the downwardly extending arm 46 and 47 integral with the sides 7and 8.

For the purpose of forcing the plaster, scraped from the belts 23 by thescraper 44, into the usual apertures of metal or wooden lath the upperedge 48 of the pressing plate 49 ispositioned adjacent the lower ed e ofthe scraper. The plaster falls by gravitation from the scraper upon theroller 50 having its ends journaled in the arms 46 and 47.

On the lower edge 51 of the pressing plate are the lugs 52 received inholes in the downwardly extending arms 46 and 47 integral with the frontends of the sides 7 and 8 of the carriage frame.

On the rearsurface of the pressing plate 49 is the rearwardlyextendinglug 53 intermediate the ends of the pressing plate. Pivotally connectedwith the lug 53, as by the pin 54, is the front end of the pitman 55having its rear threadedend 56 received in a hole in the upwardlyextending linger '57 integral with the cam 58 rotatably mounted on thepin 59 suitably secured in the sides of the rectangular casting 60.

Fixed to the end of the rear roller shaft 30 is "the spur gear 01meshing with the idler gear 62 fixed to the stud 63 rotatably mounted inthe downwardly extending arm 32, integral with the side 8 of thecarriage frame. Meshing with the idler gear 62 is the sp r gear 64 fixedto the shaft 65 having its ends respectively, rotatably mounted inhearings in the downwardly extending arms 66 and 67 integral with thesides 7 and 8 of the carriage frame.

The rear end of the casting is mounted upon the shaft 65. The cam 68 isfixed to the shaft which is .caused to rotate by the mechanismpreviously explained. The fin ger 69 integral with the cam 68intermittingly engages the finger 70 of the cam 58, thereby forcing thecam to rotate in an arc, whereby the pitman 55 is intermittently forcedrearwardly, thereby imparting intermittent rearward movement to theupper edge of the pivotally mounted pressing plate. WVhen the finger 69of the cam 68 disengages the finger 70 of the cam 58, the spring 71,fixed, to the pitman 55 and the st-rut 13, urges the upper edge of thepressing plate forwardly, whereby the plaster which falls from thescraper onto the roller 50, during the rearward position of the pressingplate, is forced in contact with the wall.

The intermittent operation of the pressing plate continues during theascent of the carriage from the lower edge to the upper edge of thewall, whereby a strip of plaster in area equal tothe product of thewidth of the front roller and the length of the pressing plate isapplied from the lower edge to the upper edge of the wall.

The smoothing mechanism which imparts movement'to the arm 95 consists ofthe trowels 103 having its rear surface fixed to the rod 104 extendingat right angles to the rear surface of the trowel. The outer end 105 ofthe rod 104 isslidably received in holes in the adjusters 106 andsecured therein by the thumb screw 107 threaded in the side of .thcadjuster and adapted to be manually screwed inwardly in contact with theinner end of the rods, whereby the outer surface of the trowel ismaintained in alignment with the outer surface of the applied plaster,after the trowel is properly adjusted.

Integral with the inner end of the adjuster 106 is the headed lug .108slidably mounted in the forward portion of ltllB SlOt 101 in :the arm102 which extends rearwardly. The rear end 109 of the arm 102 is.pi-votally mounted upon the .pin 110 .in the upper end 111 of the side8 of the carriage 5. V

The front of the sides 7 and 8 of the frame 5 are diverged outwardly andforwardly from the points 7 2 to the points 73, whereby the distancebetween the portions 74 of the sides 7 and 8, parallel with the rear ofthe sides, is considerably greater than the distance between the rearends of the sides. The angular plates 75 are integral with the loweredges of the sides 7 and .8 and have their inner edges 76 in contactwith the outer belts 23. i i

For the purpose of spreading the plaster from the grooved portion .ofthe roller 27 onto the plates 7 5 so that plaster may be pressed by thepressing plate 49 onto the wall, the full width between the forwardedges of the sides 7 and 8, or the mouth 8 of the carriage, the spreaderarm 77 is adapted to be operated successively from the side 7 to theside 8 of the frame, whereby the plaster is spread from the .belts 23.to the plates 75 and the ends 78 of the front roller 26, as thepressing plate 49 and the front end or mouth 8 between the arms 46 and47 of the carriage extends outwardly of the sides 7 and ,8, and theframe 5, whereby the plaster may be spread on the wall 43 in the corner43, as shown in Fig. 3. I

The front end 79 of the .arm 7 7 is fitted w'th the roller 80 whichengages the wall 43 when the arm 77 is in a neutral position, or

at right angles with the wall causing the ea 1 9 mp e th e ies mountedin the casting 83, whereby the arm 7'7 will be forced outwardly from thecasting 83 when the roller disengages the wall thereby spreading theplaster from the belts 23 to the upper surface of the plates 7 5 and theends 7 8 of the front roller 26. h

In the slotted holes 84 in the sides of the arm 7 7 is received the pin85 which holds the arm 77 in contact with the casting 83. The rear end86 of the casting 83 is pivotally mounted upon the bearing 87 which isintegral with the arms 19 and held in proper position by the pin 88.

Mounted upon the end 89 of the casting 83 is the arm 90 which has itsend 91 connected to the casting 83 by the pin 92. The end 93 of the arm90 is held in contact with the upright end 94 of the arm 95 by the pin96. The bearing 97 in the arm 95 is mounted upon the pin 98 in thebosses 99 integral with the side 8 of the carriage 5. The end 100 of thearm 95 is received in the slot 101 of the arm 102 which imparts upwardand downward movement to the end 100 of the arm 95 causing the end 94 ofthe arm 95 to urge the arm 90 toward the arm 95, thereby causing the arm7 7 to move horizontally across the belts 23 and distribute the plasterupon the plates 7 5 and the ends 7 8 of the front roller 26.

Movement is imparted to the trowel 103 as by the pin 112 secured to thecam 113 fixed to the shaft 114 having mounted on its inner end the bevelgear 115 meshing with the bevel gear 116 keyed to the rotatable screw 17whereby upward and downward movement is imparted to the arm 102 on whichthe trowel is mounted.

hile I believe the form of the invention illustrated in the drawings andreferred to in the above description, as the preferred embodiment, isthe most efficient and practicable, yet realizing that the conditionsconcurrent with the adoption of the device will necessarily vary, Idesire to emphasize the fact that changes in the details may be resortedto, when required, without sacrificing any of the advantages of theinvention, as defined in the claim.

I'Vhat I claim as new and desire to secure by Letters Patent is:

1. In a plastic material spreading machine, vertical frame members, acarriage slidable vertically on said members, and having a widened end,said frame members adapted to be arranged with said carriage in thecorner of a walled surface, a material supply hopper on said carriage, apressing plate, pivotally mounted on said carriage, means to operatesaid plate, means to convey material from said hopper to the Widened endof said carriage, whereby vertical movement of said carriage and pivotalmovement of said plate is adapted to spread and apply said material uponsaid walled surface in the corners thereof, and means to operate saidcarriage and said plate.

2. In a device of the class described, a frame, a carriage frameslidably mounted on said first mentioned frame and having its front endwidened, a supply hopper mounted on said carriage frame and having adischarge orifice at its bottom, a rear horizontal roller rotatablymounted on the rear of said carriage frame, a front horizontal rollerrotatably mounted on the widened front of said carriage frame, saidfirst mentioned frame adapted to be arranged with said front rolleradjacent a walled face and with one end of said roller in said corner, aplurality of belts on said rollers, said belts being arranged incontacting relation with each other and below said discharge orifice, apressing plate pivotally mounted on said carriage frame and positionedbelow said front roller, and means to operated said pressing platewhereby said plaster which falls by gravitation from said belts ispressed in contact with saidwalled surface and in said corner.

3. In a device of the class described, a frame, a carriage frameslidable vertically on said first mentioned frame and having its frontend wider than its rear end, means to slide said carriage frame on saidfirst mentioned frame, a supply hopper mounted on said carriage frameand having a discharge orifice therein, a rear horizontal rollerrotatably mounted on the rear of said carriage frame, a front horizontalroller longer than said rear roller rotatably mounted on the front ofsaid carriage frame and adapted to be positioned adjacent the wall of aroom and adjacent the corner'thereof, conveying means on said rollersand arranged below said discharged orifice, means to rotate said rearroller whereby plaster discharged from said orifice is conveyed by saidconveyin means to said front roller adjacent sai walled surface, apressing plate pivotally mounted on said carriag frame and positionedbelow said front roller, means to operate said pressing plate Wherebysaid plaster which falls by gravitation from conveying means is pressedin contact with said walled surface, and means to spread said plasterfrom said conveying means into said corner.

ENRICO MORELLI.

